Quote:
Originally Posted by Z06EATER
i'm sure it was 2.25 bro
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wow, thats a small diameter! the stock set up from the cat back is 2.5 to the resonator, and 2.75 from the resonator to the muffler. I do realize that internally the muffler is much smaller.
I am going with 2.75 straight through. from a custom y-pipe, cat, and possibly one es-tuning muffler in front of the rear axle and another in the stock possition with custom tips. I figure given the displacement of the motor and the amount hp the c36 motors produce 2.75/70mm isnt too much.
I slso have a ported head so I really wanted to reduce back pressure to reap the benefits of that mod